Henry g



(No Modell.)

H. G. VOIGHT. LOCK.

No, 572,844. Patented Deb. 8', 1896.

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ZU/ZUE5555 Hf k @E t my @i IIENRY G. VOIGI-IT, OF NEV BRITAIN,CONNECTICUT, ASSIGNOR TO THE RUSSELL dz ERW'IN MANUFACTURING COMPANY, OFSAME PLACE..

LOCK.

SPECIFICATION forming part of Letters Patent No. 572,844, dated December8, 1896. Application filed April 25, 1896. Serial No. 589,058. (Nomodel.)

T0 al?, whom t may concern:

Be it known that I, HENRY G. VOIGHT, a

citizen of the United States, residing at New Britain, in the county ofHartford and State of Connecticut, have invented certain new and usefulImprovements in Locks, of which the following is a specification. Myinvention relates to improvements in locks of the class in which thebolt is thrown by a knob or thumb-turn on the inside ot' the door and bya key from the outside of the door; and the main object of myimprovement is to enable the key to always operate the bolt, no matterin what position the inside knob or thumb-turn may be left.

In the accompanying drawings, Figure 1 is a front elevation of mylockwith the cap-plate removed, the part of the case containing the latchbeing .represented as broken oft. Fig. 2 is a like view of the same withthe hub of the thumb-turn and its friction-tumbler removed. Fig. 3 is anenlarged sectional View,

' partly in elevation, of my lock on the line of Fig. 1. Fig. 4 is aninner face view of a portion of the cap-plate, showing the bearing forthe hub of the thumb-turn on the same scale as Figs. l and 2. Fig. 5 isan enlarged end view of the hub of the thumb-turn, showing its innerend; and Fig. 6 is an end view of the lock-cylinder and its hub or case.

I have shown my lock in a case A for a combined latch and lock; butIcontemplate using it in a lock-case separate from the latch. The mannerof combining the look and latch forms no part of my present invention,and hence any further reference to the parts of the latch is consideredunnecessary.

B designates a lock-bolt of ordinary construction provided with anyordinary form of tumbler or tumblers 7. I have also shown acylinder-lock 8, carrying a bolt-throwin g win g or bit 9 and mounted inthe hub-like case l0, for throwing the lock-bolt by the application of aproper key from the outside of a door. These are of ordinaryconstruction, and any other form of bolt-throwing bit may be substitutedfor the wing or bit 9, whether the same be mounted on a cylinder-lock oron an ordinary key, both being known equivalents. Said bolt-throwing bitcarries also an eccentric projection or stud 11 at its inner end.

porting the inner end in a bridge 15, Xed

within the lock-case A. I support the outer end of said hub in the capC. In addition to supporting said hub axially at each end I provide theconfronting sides of the bridge 15 and cap C, adjacent to the hub, withincline-s or cams 16 for imparting to said hub a short longitudinalmotion. The most projecting portions of the cams of the cap are oppositethe deepest depressions in the cams of the bridge, so that the twotogether form practically a cam-groove, between which the arms 14 of thethumb-turn hub work and thereby impart this longitudinal movement tosaid hub. These cams or inclines are so located that when the hub l2stands in its normal position with its arms parallel to the lock-bolt italso stands in its farthest position from the bolt-throwing bit. Whensaid hub is turned in either direction from its normal position, itimmediately moves endwise toward said bit until it has made aquarterrevolution. If its rotary movement is continued in one directionbeyond a quarterrevolution, it moves endwise away from the said bit 9until it completes a half-revolution and is then again in its normalposition. The inner end of said hub 12 is slabbed off on two sides toform striking faces 17 for the engagement of the stud 11 on thebolt-throwing bit 9. For holding the hub 12 against accidentaldisplacelnent and for throwing it from certain positions into its normalposition I employ the friction tumbler or slide 18, which is pressedtoward the said hub 1.2 and against its arms 14 by means of a spring 19.I prefer to leave the ends of the arms 14 at the portions upon which thefriction tumbler or slide acts with nearly full corners, as shown, whilethese arms at the portions which act IOO upon the bolt-talons may havetheir corners cut off, as shown at 2O in Fig. 5.

As before stated, when the thumb-turn hub is in its normal position itis forced endwise to its farthest position away from the boltthrowingbit. In this position the bit and its projection 1l may be operated tothrow the bolt by the key from the outside without engaging each otheror moving the said hub l2. If, however, the bolt is thrown bythethumbturn and the thumb-turn partly rotated, or the bolt is only partlythrown, so as to leave the hub standing at or about right angles to theposition shown in Fig. l, then the friction-tumbler will hold thethumb-turn in that position. Ii the thumb-turn is so left in an ordinarylock7 the bolt cannot be thrown by a key from the outside. In my lockwith the thumb-turn thus set it will have been moved endwise far enoughto have one of the faces 17 come in the path of the projection ll on thebolt-throwing bit, so that upon applying the key from the outside andturning it the hub of the th umb-turn is carried with the key and thebolt is thrown by the combined action of the bit 9 and hub l2, althoughthe hub is actuated by the key instead of by the thumb-turn.

By my improvement there is no danger of so setting the thumb-turn on theinside that the bolt cannot be thrown by the application of the properkey from the outside. The thumb-turn hub, when in its normal position,is wholly disconnected from the bolt-throwing bit; but when not in itsnormal position it is so connected with the bolt-throwing bit as to bethrown into its normal position by the act of withdrawing the bolt fromthe keeper with the proper key. By the employment of the bridge thethumb turn hub is supported at each end and the hub can be properly setin position before applying the cap-plate, whereby the lock can be moreconveniently assembled.

After having disclosed a lock in which a displaced thumb-turn hub isturned to its normal position by the regular use of a proper key fromthe outside, various ways of so doing will readily suggest themselves tothe skilled mechanic, and I wish it distinctly understood that I intendto cover all such changes as fairly fall within the scope and spirit ofmy invention, although they may differ from the details of constructionherein shown and described.

I claim as my inventionl. The combination with a lock arranged to haveits bolt thrown by the application of a key from one side and by the hubof a thumb-turn or knob from its other side,with connecting devices forconnecting the thumbturn hub with the key-actuated bolt-throwing bitwhenever said hub is turned from its :normal position substantially asdescribed.

2. In a lock of the class described the combination of a lock-bolt, abolt-throwing bit for actin on said lock-bolt, a thumb-turn hub alsoarranged for acting on said lock-bolt, and means for connecting saidthumb-turn hub and bit whenever the said hub is turned into a positionto engage said lock-bolt and for disconnecting them whenever the saidhub is turned into its farthest position from engagement with saidlock-bolt, substantially as described and for the purpose specified.

3. In a lock of the class described the combination of a bolt-throwin gbit, a thumb-turn hub and means for imparting an endwise movement tosaid hub through its rotation for connecting and disconnecting it fromsaid bit, substantially as described and for the purpose specified.

4L. In a lock of the class described, the thumb-turn hub, bearings ateach end of said hub, and cams or inclines on the confronting faces ofsaid bearings for imparting an endwise movement to said hub,substantially as described and for the purpose specified.

5. In a lock of the class described the combination of the thumb-turnhub for throwing the lock-bolt, with the cap-plate supporting` said hubby 011e end7 and the bridge Within the lock-case for supporting said hubat its other end, substantially as described and for the purposespecified.

HENRY G. VOIGHT.

lVitnesses:

T. S. Bisnor, M. S. WIARD.

